Improvement in steam-generators and feed-water heaters



(14s.) 3Sh eets--She et1'.

M. N. LYNN.

Improvement in Steam Generators and Feed Water Heaters.

11 No. 122,042 Patented Dee. I9. 1871.

v Witnesses: I Inve tor v o x g to Mn) (148.) 3 She'ets -Sheet 2.

M. N. L-YNN.

Improvement in Steam Gnerators and Feed Water Heafers.

Witnesses: i Inv c or V W Lg [J I 72 a (148) 3 Sheets--Sheet '3.

M; N LYNN. Improvement in Steam Generators and Feed Water Heaters.

' Patented Dec. 19,1871.

UNITED STATES PATENT OFFICE MIRABEAU N. LYNN, OF NEW ALBANY, INDIANA.

IMPROVEMENT m STEAM-GENERATORS AND FEED-WATER HEATERS.

Specification forming part of Letters Patent No. 122,042, dated December19, 1871.

Toall whom it may concern:

Be it known that I, MIRABEAU N. LYNN, of

' New Albany, in the county of Floyd and in the State of Indiana, haveinvented certain new and useful Improvements in Steam'Generators; and dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawingandto the letters of reference marked thereon making a part of thisspecification.

The nature of my invention consists in certain improvements upon thesteam generator for which Letters Patent were granted to me J anuary 10,1871, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in which-Figure 1 is a side view of my steam-generator, one side of the casingbeing thrown open. Fig.

2 is a transverse vertical section, and Fig. 3 a bottom view of thesame. Fig. 4. is a perspective view of one of the shelves used in a partof the outside shell; and Fig. 5 is alongitudinal section of one of theinclined cross-pipes used in my steam-generator.

The boiler-shell proper, as in my former pat ent, is made. on two sidesby a series of upright pipes, A A, screwing into a cross-pipe, B, andthis cross-pipe made to connect with the upper drum 0. The lower ends ofthese pipes are made to expand in the lower water-leg D as tubes areordinarily fastened. On the third side are similar but shorter tubesscrewed into a cross-pipe which is by other pipes connected with theupper drum G. Upon the remaining side are upright pipes A A, fastened inthe lower water-leg by expansion, and fastened to the upper waterdrum (3by screws in the same manner as described in my former patent. In eachof these upright pipes are placed five cross-pipes, E E, that enter atan angle of about fifteen degrees. There are indentations made in theupright pipes A A at the pointswhere the cross-pipes E E enterinto them,as shown at a a, Fig.2. These indentations will make the cross-pipes beat right angles to the indented faces, causing the contraction andexpansion to be taken up on the outside rim of the indented facesinstead of throwing the strain upon the threads. v The cross-pipes E Eextend across the fire-box space, and are closed at their ends by caps bb, which are screwed on. Inside of each cross-pipe is placed acirculatingpipe, d, suspended by means of two steel bolts, 0 e, thatwill not permit it to touch the sides of the outer-pipe. The insidepipes (Z (1 will cause the water to continually discharge itself at thecapped ends of the cross-pipes, keeping up a continual circulation. Thewater and steam drum 0 above connects with the water-drum D below by theupright pipes A A, as already described, and also by outsidedown-circulating pipes G G,

which pipes perform a very important office, as

they keep constantly a free and uninterrupted flow of water from the topto the bottom of the boiler. part or shell of the boiler, are spaced sothat a broom can be inserted and the outside of the inclined pipes beswept clean from dirt and soot..

On three sides of the body of the outside upright tubes is placed athree-sided protecting-plate, H, to keep the flame off fromtheexhaust-case and lime-extractor; also, on the remaining side is aone-sided protector, I. These protecting-plates are so made that whennecessary for repairs they can be entirely removed without loss of timeor trouble. Completely incasing the protectingplates are the three-sidedexhaust-case J and the hinged case or lime-extractor K on the remainingside. The hinged case is united to the threesided exhaust-case by meansof pipes L L, so as 'to form a steam and water, communication with thesame. Each of these pipes is made in two parts, one attached to the caseJ and the other r -to the case K, and united by right and left thimbles,as shown in Fig. 3. The case K is hinged to the case J for severalreasons, prominent among which is that by disconnecting the top andbottom pipes L L, and opening the case and removin g theprotecting-plate I, the fines may be swept and the inside of the greaterpart of the boiler inspected. While the case K is open the flat or edgeface thereof, upon which the two connecting-pipes L L are made fast, ismade to open, and will be bolted fast by suitable bolts. thisface isopen there is disclosed a series of horizontal shelves, water-ways, orlime-holders, f f;

and when water is introduced through the pipe M on the outside of thecase it will traversethe' whole length of these shelves back and forth,

The upright pipes, which form the main When and they being surrounded byexhaust steam, which makes its entrance the bottom pipe N, the supply ofwater becomes heated to such a degree as to be purified, all sediment,lime, 850., settling purposes, viz.: First, prevent radiation of heatfrom the boiler; second, heat the feed-water and take out any impuritiesby means of the shelves f f; and, third, a receptacle for accumulatedwaste-water from the engine condensed from outside air contact and fromheating the feed- Water. v a V I The exhaust steam which enters throughthe bottom pipe N makes exit at the pipe 0. The pipes L L answer twopurposesone to communicate with the other three sides, and also afastening by'means of the right and left hand thiinbles. This case actsa very important part to traction-engine boilers, as with it aboutonethird of the water that would otherwise go to waste is constantlysaved for re-use.

A smoke case, P,-extends around the steamdrum 0, and is made in twoparts so as to be readily removed.

. Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. The inclined pipes of a steam-generator connected to the verticalpipes by flattening the said vertical pipes around the orifices andscrewing said inclined pipes into the orifices so that the indentedsurfaces and inclined pipes are at right angles to each other,substantially as and for the purposes set forth.

2. The protecting-plates H I arranged between the upright pipes A A andthe casing J K of a steam generator for protecting the walls of thecasing, substantially as and for the purposes set forth.

casing K provided with the shelves f arranged around the exterior of theupright pipes A A and connected by the elbow-pipes L L, substantially asand for the purposes set forth.

4. The combination of the casings J K, shelves f f, connecting-pipes LL, feed-water inlet M, v

1871. y MIRABEAU N. LYNN.

Witnesses:

D. R. SCOTT,

D. O. ANTHONY. (148) '3. The hollow three-sided casing J and the

